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Knopf.css - Open source button system leveraging CSS variables — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Web Design And Html →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
css-variables.com ↗	70 match 1 shared topics	CSS Variables Generator \| Design System Tool	en	web-design-and-html	robotsllmsaihumans	emailphone	none
cssbuttons.io ↗	66 match 1 shared topics	CSS Buttons	en	web-design-and-html	robotsllmsaihumans	emailphone	none
bestcssbuttongenerator.com ↗	65 match 1 shared topics	CSS Button Generator: Create HTML and CSS Button Styles	en	web-design-and-html	robotsllmsaihumans	emailphone	none
cssbuttons.app ↗	65 match 1 shared topics	cssbuttons.app \| Over 60+ Free CSS Buttons To Use	en	web-design-and-html	robotsllmsaihumans	emailphone	none
7onic.design ↗	65 match 1 shared topics	7onic Design System	en	web-design-and-html Ghost	robots llmsaihumans	emailphone	none
cssbuttoncreator.com ↗	65 match 1 shared topics	CSS Button Creator - Imageless CSS Button Creator	en	web-design-and-html	robotsllmsaihumans	emailphone	none
eidotter.com ↗	64 match 1 shared topics	eiDotter — A DOS Design System	en	web-design-and-html	robots llmsaihumans	emailphone	partial · 8
spelte.dev ↗	64 match 1 shared topics	Spelte	en	web-design-and-html	robotsllmsaihumans	emailphone	none
hemaengineers.com ↗	64 match 1 shared topics	Hema Engineers - ERP System - Crafted by zworktechnology.com	en	web-design-and-html	robotsllmsaihumans	emailphone	none
buttongenerator.com ↗	64 match 1 shared topics	CSS Button Generator - Create Custom Buttons Online Free	en	web-design-and-html	robotsllmsaihumans	emailphone	none
alignui.com ↗	64 match 1 shared topics	AlignUI Design System - Design and development perfectly aligned	en	web-design-and-html	robotsllmsaihumans	emailphone	none
efrere.com ↗	64 match 1 shared topics	eFRERE.com - your online source for high-quality, low-cost web templates	en	web-design-and-html osCommerce	robotsllmsaihumans	emailphone	none
960.gs ↗	64 match 1 shared topics	960 Grid System	en	web-design-and-html	robotsllmsaihumans	emailphone	none
css-gems.com ↗	64 match 1 shared topics	CSS Gems - Free CSS Tools & Resources for Web Developers \| CSS Gems	en	web-design-and-html	robotsllmsaihumans	emailphone	none
cssportal.com ↗	64 match 1 shared topics	CSS Portal - Generators, Resources, Tools, HTML - CSS Portal	en	web-design-and-html WordPress	robotsllmsaihumans	emailphone	none
csscloud.io ↗	63 match 1 shared topics	Index - CSSCloud.io - Ultimate Resource for CSS Tips, Tricks, and Tutorials	en	web-design-and-html	robotsllmsaihumans	emailphone	none
animate.style ↗	63 match 1 shared topics	Animate.css \| A cross-browser library of CSS animations.	en	web-design-and-html Lightspeed	robotsllmsaihumans	emailphone	none
animate.style ↗	63 match 1 shared topics	Animate.css \| A cross-browser library of CSS animations.	en	web-design-and-html Lightspeed	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.